Glossary of Terms

Understand basic Public Safety definitions and terms.

Entity

Definition:

Entity is a TSS data element designated by Intrado to simplify data management by grouping MSAG records. The Entity
represents a geographical area that generally corresponds to E9‐1‐1 selective routing boundaries. In some cases, Entity
corresponds to the county or telephone exchange.

SDE

Spatial Data Engine. Manages spatial data in a relational database management system and enables it to be accessed by ArcGIS, ArcView, and web...

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Foreign Data

Spatial data provided electronically to the Data Collection team by a PSAP or other 9‐1‐1 agency. This information is used in the creation and...

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DMS

Data Management System - A data base managed by the telephone company which includes ANI and ALI information.

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Re-projection

Converting foreign data from the PSAP specified projection to that used by the GIS team, allowing analysts to overlay the data with current...

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